I would say that makes sense if the film wasn't made in IMAX although generally IMAX greatly enhances the movie theatre experience.

This film will be shot completely in IMAX so it will be worth it. Your just one of the people who think certain features don't enhance movies and its price gouging. In most cases, yes, but in this case, they have a valid reason to ask IMAX pricing.

First, directors Anthony and Joe Russo will try out a new, lighter 2D digital camera from IMAX and Arri to shoot 15 minutes of Captain America: Civil War. Then, they'll plan the Infinity War movies around the IMAX camera.

Perhaps the producers will be satisfied with just taking the IMAX premium and not need to charge the 3D premium this time out. If true; what a lucky break for viewers who won't have to suffer through the vastly inferior 3D presentation!

I think I heard some of his Avengers theme (probably the only Marvel theme/cue I can hum/whistle from memory) in Civil War but I could be mistaken
I miss recognizable themes/cues in these Marvel movies like John Williams, Jerry Goldsmith and James Horner used to do in their work but I guess that kind of scoring is corny these days.